The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 01, 2026
Filed:
Sep. 19, 2023
Toyota Jidosha Kabushiki Kaisha, Toyota Aichi-ken, JP;
Yoshiaki Kikuchi, Toyota Aichi-ken, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
Abstract
A power storage system performing charging and discharging with an external system includes first and second battery units connected in parallel and each including a plurality of battery packs connected in parallel to a power converter. The power storage system includes a controller controlling operation of each power converter. The first and second battery units include a first battery pack and a second battery pack higher in internal resistance than the first battery pack, as the plurality of battery packs. The controller selects two second battery packs from a plurality of second battery packs included in the power storage system. In a standby state where charging and discharging are not performed with the external system, the controller performs, at different timings, control to discharge one of the selected two second battery packs and thereby charge the other, and control to discharge the other and thereby charge the one.